> For the complete documentation index, see [llms.txt](https://prosbcdocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prosbcdocs.telcobridges.com/tmedia-documentation/configuration/web-portal-3-3/protocol-stack/sccp-tcap/creating-an-sccp-stack.md).

# Creating an SCCP Stack

> **Applies to:** Tmedia 3.0, 3.2, 3.3

After the [ISUP](https://prosbcdocs.telcobridges.com/telecom-references/ss7-and-signalling/isup) portion of your system is configured, you must create the [SCCP](https://prosbcdocs.telcobridges.com/telecom-references/ss7-and-signalling/sccp) layer. The first step in doing so is to create an SCCP stack.

The Signaling Connection Control Part (SCCP) layer provides connectionless network services and an address translation mechanism, called global title translation (GTT), capability above MTP3.

To create an SCCP stack:

1- Select **SCCP** from the navigation panel

![Create SCCP Stack 0](https://docs.telcobridges.com/w/images/f/fa/Create_SCCP_Stack_0.png)

2- Configure the new SCCP stack:

* Make sure the [Enabled](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/sip#e) box is checked
* Enter a [Name](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/m3ua#n) for the SCCP stack
* Select a [Primary Adapter](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/sccp#p)
* Select a [Secondary Adapter](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/sccp#s)
* Click **Create**

![Create SCCP Stack 1](https://docs.telcobridges.com/w/images/4/45/Create_SCCP_Stack_1.png)

3- Verify that the **"SCCP Stack was successfully created"** message appears

![Create SCCP Stack 2](https://docs.telcobridges.com/w/images/e/e7/Create_SCCP_Stack_2.png)

**Path**

```
/configurations/@[configuration_name]/sccp_stacks/@[sccp_stack]
```

**Parameters (text)**

```
/configurations/@[configuration_name]/sccp_stacks/@[sccp_stack]
enabled             = true
ins_maps            = [  ]
isni_maps           = [  ]
name                = " @[sccp_stack]"
primary_unit        = "@[hardware_name]"
secondary_unit      = "NONE"

/configurations/@[configuration_name]/sccp_stacks/@[sccp_stack]/advanced_parameters
custom_msg_imp              = false
def_status_enq_timer        = 1000
msg_imp_ext_unit_data       = 4
msg_imp_ext_unit_data_serv  = 3
msg_imp_long_unit_data      = 4
msg_imp_long_unit_data_serv = 3
msg_imp_unit_data           = 4
msg_imp_unit_data_serv      = 3
```

**Parameters (json)**

```
{
  "advanced_parameters" : {
    "custom_msg_imp" : false,
    "def_status_enq_timer" : 1000,
    "msg_imp_ext_unit_data" : 4,
    "msg_imp_ext_unit_data_serv" : 3,
    "msg_imp_long_unit_data" : 4,
    "msg_imp_long_unit_data_serv" : 3,
    "msg_imp_unit_data" : 4,
    "msg_imp_unit_data_serv" : 3
  },
  "enabled" : true,
  "ins_maps" : [
  ],
  "isni_maps" : [
  ],
  "name" : " @[sccp_stack]",
  "primary_unit" : "@[hardware_name]",
  "secondary_unit" : "NONE
}
```

### List of Parameters

* [Enabled](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/sip#e)
* [Name](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/m3ua#n)
* [Primary Adapter](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/sccp#p)
* [Secondary Adapter](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/sccp#s)

**Advanced Parameters**

* [Default Status Enquiry Timer](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/sccp#d)
* [Customize msg importance](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/sccp#c)
* [Msg Importance: Unit Data](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/sccp#m)
* [Msg Importance: Unit Data Service](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/sccp#m)
* [Msg Importance: Ext Unit Data](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/sccp#m)
* [Msg Importance: Ext Unit Data Service](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/sccp#m)
* [Msg Importance: Long Unit Data](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/sccp#m)
* [Msg Importance: Long Unit Data Service](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/sccp#m)


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